Ok, so they changed the layout of the Ledge to "make it more consistent with other Act 1 areas". Saw that and decided to do about 5 runs fast in Merciless. I went safe, which means I didn't do my low life build (although I probably could) so I "only" have 143% iir. First impression, mobs and bosses are the same, but overall it's shorter, which means faster. 2nd Impression, and this is all anecdotal with a low sample size, but drops are worse. 1 run I did a full clear and had no rares drop, other ones were between 2-6. This is worse than it used to be. However: 3rd impression: Currency drops seemed to be up. Even extremely overleveled, in 5 runs I got a regal, scouring, chance, and lots more lesser orbs than I would have normally. So there's that. The regal is random, but the lower level gems were not.
Which brings me to another observation: I don't think areas are completely random. Sometimes I'll enter an area and the first mob pack will drop 2 orbs. I know that area is going to drop a lot of orbs. Sometimes the first 2 packs will be blue, I know that area is going to have a high number of blues. I've farmed enough to believe that this is true, could influence how I run areas, ie. If first mob pack doesn't drop currency/isn't blue, reroll. This wouldn't apply to Merveil runs, but things like the docks. Curious if anyone else has experienced this phenomenon.